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Anyone came accros the weight of the Cervelo SP18 seatpost? They say frame weight is the same as previous R5, but the new post, being proprieatry, has also to be taken into account in the comparison... And their new TA system, simular to RAT? Also proprietary, surely quiet heavy. Both could add up and contribute to an not that impressive final weight, despite the low frame and fork weights. Just a tought, but this is weignt weenie after all.